Shaking ore-concentrator.



J. G. SMITH.

SHARING om: GONGBNTRATOR.

APPLICATION FILED FBBJZ, 1914.

1 1 18,593. Patented Nov. 24, 1914.

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SHAKING ORE CONCENTRATOR. APPLIUATION FILED 1213.12.1914.

1,118,593. Patented 11011.24, 1914.

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SHAKING ORE-CONGENTRATOR.

Specification of Letters Patent.

Patented Nov. 24, 1914.

i Application filed February 12, 1914. Serial No. 818,425.

T0 all whom it may concern Be it known that I, JOHN C. SMITH, a citizen of the United States, residing at Salt Lake City, county of Salt Lake, and State `of Utah, have invented certain new and useful. Improvements in Shaking Ore-Concen trators, of which the following is a specication. y

This invention relates to shaking ore concentrators.

` My object is to provide an improved shaking ore concentrator for the recovery of fine or flour metal commonly called slimes from low grade copper ore. `Fine or flour ore is'so light that it tendsto float olf of a concentrator with the wash-water and `to go into the tailings. l y

My object is to provide, lirst, a shaking or vibrating coneentrator having improved rotary ritlles adapted to separate out the fine or flour metal or slimes and to prevent them frompassing off with the Wash-water.

The foregoing object is accomplished by the provision of rotary rolls, certain or all of which have riiiled surfaces, said rolls being arranged parallel and adapted to pass the iine or flour ore or slimes down between them to be washed ofl` and caught below. Preferably, loutnot necessarily, the riilied surface is in the form of a copper wire or rib arranged spirally around and carried by the roll, but it is not necessary for all the rolls to have a riiiled surface or a riiiled surface of the character set forth, as ordinarily alternate rolls will be provided with the rilledV surface and the other rolls will loe smooth or relatively unriltled. I prefer to make the rolls with a rubber or resilient exterior to assist in the retention of the fine particles of the slimes.

In carrying out the invention, I `arrange the rolls at an inclination and sutliciently close together to retain a layer of liquid pulp thereover and permit stratification by gravity and also provide means for washing the under surfaces of the rolls to remove the adhering concentratestherefrom. The rolls are arranged sufficiently close together to revent any of the water, sand, or refuse 'rom passing betweenthem. The metal being the heaviest, will stratify below the crude overlying pulp and will settle down in the bottoms of the channels or grooves formed by the rolls so that a slight turn of the rolls will pass the metal underneath where it will be washed off.

lVhile I am well aware that the washing of the under surfaces of the rolls may be carried out in different ways, I preferably employ a trough or troughs down which the wash-water flows and, while flowin 0", washes the concentrates from the rolls. Tliere may be a separate channel or chute for each roll. If aplurality ofsections of rolls are carried by the same shaking table, the washwatcr may be conducted from one section to another, oi" each section may have its own washing means and the concentrates may be taken` off separately from the different sectionS. v

The.` shaking or vibrating table carrying the rolls may be mounted in any preferred manner andprovided with any preferred head motion to afford the necessary shake or vibration.

While I am aware that various means could be employed for turning the rolls, I preferlto employ an improved pawl-andratchet mechanism for simultaneously turn ing all of the rolls of a` given section.

One embodiment of the invention which is set forth fully hereinafter shouldbe con sidered as illustrative, rather than restrictive, of the scope of the invention whiehkis susceptible of various modifications without departing from the spirit and scope thereof. In the accompanying drawings: Figure l is a side elevation; Fig.` 2, a longitudinal sectiongFig. 3, a plan view; Fig. t, a crosssection on line 11E-e4, Fig. 2, looking in the direction of the arrows; Fig. 5, a detail cross-section of one of the rolls; Fig. G, a longitudinal section thereof within the gudgeon in full lines; Fi 7, a cross section of a pair of rolls showing how they contact with each other; Fig. 8, an elevation `of one of the bearing plates; and Fig. 9, a cros`ssection of the launder. Fig. 10,`a detail perspective of a portion of the wash-water feeder; and Fig. l1, a detail of an` end of a splash board.

The concentrator l may be mounted and shaken in any preferred manner. 1n the drawings there is shown a frame 2 from which the concentrator 1 is suspended by jointed and adjustable rods 3Which have adjusting hand-nuts a and are engaged by hooks at their lower ends with eyes 5 on the side beams or plates 6 of the concentrator 1. The head motion or shaking action may consist of ay star-cam 7 acting on a rod 3 adjustably connected at 9 to the concentrator 1. The concentrator 1 may have a frameworlr or bed of any suitable form and, in addition to the side plates 6, it has a bottom 10 which may have one or more longitudinal trusses or beams 11. 1 do not limit myself to the exact constructiony of frame shown and described.

Carried by the framework -of the concentrator in any suitable manner are rolls 12 arranged to receive the pulp on their upper faces and adapted to concentrate or separate out the fine or flour ore or s limes and to force the concentrates between them for subsequent taling off below. These rolls are preferably of the construction 'shown in Figs. 5, 6 and 7, consisting of a center core or tube 13, an outer rubber or elastic or.

yieldable shell or facing 1li, and suitable gudgeons or journals 15. The latter may be screwed into the end ofthe core 13 'at 16. 1t is not necessary for all of therolls 12 ,to be riied, but certain of them, preferably every alternate one, should be rifllech am aware that different forms of riflles may be employed and 1 do not limit myself, except where stated in the claims, to the specific form of riffle shown which isa copper wire 17 wound spirally around and secured toand preferably slightly embedded in the shell or facing 1-1, and preferably pressing against and into the elastic or yielding face 14. of the smooth roll adjacent thereto. The rii'lies on the rolls catch and force the slimes or fine ore down between the rolls. The gudgeons 15 may be mounted in any suitable manner which will permit the rolls to be put in or taken out when necessary. I preferably einploy bearing plates 18 of the form shown in Fig. 3 whichh'ave bearing slots 19 in which all of the gudgeons 15 at one end of a given set of rolls are received. A corresponding plate at the other end of a given vset of rolls constitutes bearing `means therefor. The plates 1.3 may be secured to the sides of the table 1 by suitable fastenings 20, or in any other manner. 0n one end of every alternate roll 1 provide a ratchet-wheel 21 which may be carried by one of the gudgeons 15. These ratchet-wheels are preferably carried by those rolls which have the rifle 17 so that the riii'led rolls will be positively driven. 1 do not limit myself to the location or number of the ratchet-wheels, nor to the use of ratchet-wheels as a turning means for the rolls, except where stated in the claims, as

other means can be employed for turning the rolls.

Referring to Figs. 2 and 4i, `t-here are mounted on the gudgeons whichv carry the ratchet-wheels 21,roclers 22 ,which may be provided with a plurality of holes 23 for their adjustable connection by a belt 24 to an operating bar 25. One operating` bar 25 serves to rock all of the rochers 22 for a given set of the rolls 12. 1n the drawings l have shown three sets of rolls and there are, therefore, three operating bars 25. The operating bars may be reciprocated in any depitmeii have a looseconnection with cranks 26a to compensate for the throw of the table.

The sides 6 carry longitudinally extending retainers 32 which may consist of pieces of rubber hose on a central core, which prevent the overflow of the pulp which is pass-` ing over the rolls 12.

`The pulp may be introduced tothe highest section of rolls in any preferred manner, as for instance, by a launder consisting of a box or trough 33 extending transversely across the' head of the concentrator and provided with a bottom 311 (Fig. 9) and numerous small holes 35 arranged at intervals lengthwise thereof for vthe delivery thereof tothe bottom 34e whence it is distributed through slots ornot'ches 36 onto the rolls (Fig. 3). Y

Suitable meansmay be provided for catching the concentrates passed downwardly between the rolls. 1 prefer to mount upon the 'fi-aine 1 and betweenL the sides 6 thereof, cement 37 and to provide the upper surface thereof with a plurality of channels or chutes 33 for the wash-water, said chutes being preferably of the same curvature as the rolls and lyingy just below them, being separated therefrom by a very slight space so that the wash-water flowing down the channels washes oif the `concentrates from the rolls and so that the lower parts of the rolls may at times be immersed in the washwater. The channels may be formed by molding cement on the frame 1 and pressing the rolls 12 down into said cement, afterward allowing` the cement to set. Splash boards 36EL (Figs. 2 and 11) deflect the flow downwardly at the lower ends of the channels 38.

The wash-water may be obtained from a tank 39 (Fig. 10) supplied by periodic flushings from an automatically rocking trough 40 pivoted at L11y and' having two compartdo not limitmyselfto this construction eX- cept where stated in the claims. If desired, a separate sourceof wash-water for the channels of each of the sections could be employed. In the form shown, the washwater passes from the channels of one section to those of the next section below.

Referring to Figs. 2 and l0, the water from pipe 39 first fills, for instance, compartment 42, whereupon the trough 4() tilts, precipitatively discharging its contents into the tank 39 and the latter rapidly rushes down pipe and out through delivery mouth 4G. The tilting of the trough 40, positions the other compartment 43 where it will receive water from the pipe 39 and, subsequently, the weight of the water therein tilts the trough 40in the opposite direction, discharging the contents of the compartment into tank 39. This again positions coi'iipartmentfl for re-filling. Thus, a large volume of wash-water is periodically discharged into the upper ends of thechannels 38. i

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. In an ore concentrator, the combination of a plurality of rotatable rolls arranged parallel with their surfaces in relatively close disposition and at such inclination and spacing that they retain a layer of liquid pulp thereover and permit stratilication by gravity, said rolls being adapted to pass the concentrates between themselves, means for flowing pulp over the rolls, and means for removingthe concentrates from below the rolls.

2. In an ore concentrator, the combination of a plurality of rotatable rolls arranged parallel with their surfaces in relatively close disposition and at such inclination and spacing that they retain a layer of liquid pulp thereover and permit stratification by gravity, said rolls being adapted to pass the concentrates between themselves, means for flowing pulp over the rolls, and means for washing the under surfaces of the rolls to remove the concentrates therefrom.

3. In an ore concentrator, the combination of a plurality of rotatable rolls arranged parallel with their surfaces in relatively close disposition and at such inclinat'ionand spacing that they retain a layer of liquid pulp thereover and permit stratification by gravity, said rolls being adapted to pass the concentrates between themselves, means for `flowing pulp over the rolls, and individual wash-water chutes or spective rolls.`

4. In an orc concentrator, the combination of a series of rotatable rolls arranged paral lel with the peripheries of successive rolls substantiallytouching each other said `rolls being at such inclination and spacing that they.retaina layer of liquid pulp thereover and permit stratiiication by gravity, means for flowing pulp lengthwise over the rolls, and means for removing the concentrates from the rolls.

5. In an ore concentrator, the combination of a series of rotatable rolls arranged parallel with the peripheries of successive rolls substantially touching each other, said rolls being at such inclination and spacing that they retain a layer of liquid pulp thereover and permit stratification by gravity, certain of said rolls being rillled, means for flowing pulp lengthwise over the rolls, and means for removing the concentrates from below the rolls. 4

G. An ore concentrator having a plurality of rotatable rolls provided with elastic or yielding surfaces arranged relatively `close to each other and adapted to pass the concentrates between themselves, the inclination and spacing of said rolls being such as to retain a layer of liquid pulp thereover and permit stratification by gravity.

7 An ore concentrator having a plurality of rotatable rolls provided with elastic or yielding surfaces arranged relatively close to each other, certain ones of such rolls having a ril'lled siu'face bearing against the surface of an adjoining roll, the inclination and spacing of said rolls being such as to retain a layer of liquid pulp thereover and permit st 'atification by gravity.

8. Anore concentrator having a plurality of rotatable rolls provided with elastic or yielding surfaces, certain ones of said rolls being provided with rillles which contact with an adjoining roll, the inclination and spacing of said rolls being such as to retain a layer of liquid pulp "thereover and permit stratification by gravity.

9. An ore concentrator having a plurality of rotatable rolls provided with elastic or yielding surfaces substantially contacting with each other the inclination and spacing of said rolls being such as to retain a layer of liquid pulp thereover and permit stratification by gravity, and means for flowing or flushing wash water against the under surfaces of said rolls to remove the concentrates therefrom.

10. In an ore concentrator, the combination of a plurality of rotatable rolls relatively arranged and adapted to pass the concentrates between themselves, the inclination channels under the re- -ei A 1,118,593

and spacing of said rolls being suoli as to ref4 tain a layer of liquid pulp thereover and permit stratification by gravity and means Common to all of said rolls adapted for simultaneously rotating them at substantially the same speed, means for loWing pulp over the rolls, and means for removing the Concentrates fromfthe under sides of the rolls.

l1. As a new article of manufacture, a

oonceiitrator 'roll having a yielding rubber 10` surface and provided With t metallic rile JOHN C. SMTH. Ttnesses l A. M. CHENEL' fJoHN JENSEN.

Copies of this patent may be obtained 'pfor ve cents eachby addressing the Commissioner of Eatents,

Washington, D. G. v l 

